509343028 has 12 divisors (see below), whose sum is σ = 895576192. Its totient is φ = 253464120.

The previous prime is 509343017. The next prime is 509343067. The reversal of 509343028 is 820343905.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 509342984 and 509343002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300900 + ... + 302587.

Almost surely, 2^509343028 is an apocalyptic number.

It is an amenable number.

509343028 is a deficient number, since it is larger than the sum of its proper divisors (386233164).

509343028 is a wasteful number, since it uses less digits than its factorization.

509343028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603702 (or 603700 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 509343028 is about 22568.6292893476. The cubic root of 509343028 is about 798.6137597265.

The spelling of 509343028 in words is "five hundred nine million, three hundred forty-three thousand, twenty-eight".